Enrollment & Outcomes Scorecard
Chaffey High School
Public · Ontario · San Bernardino County · 3,052 students · Class of 2025
UC Reach · Class of 2025
10%
Higher than 17% of California high schools
-7.1 pp vs. peer median (17.1%)
· Ranked #10 of 11 similar schools
5-year UC Reach
2021 · 13.3%
2025 · 10.0%
-4%
Senior-class enrollment (2018–2026)
-4.4 pp
vs. San Bernardino County baseline (+0%)
~2965
5-yr projected enrollment (87 fewer than today)
- ▸On UC Reach, Chaffey High School sits near the bottom of its similar-school group (ranked #10 of 11): 10% vs. a peer median of 17%.
- ▸Its UC Reach has risen 2 points since 2018.
- ▸Across the top-6 UC campuses, Chaffey High School is admitting at roughly +7 percentage points above what its average applicant GPA (3.841) alone would predict (27% actual vs. 20% expected). That's a meaningful signal — it can reflect UC's track record with this school's graduates, students presenting strongly in UC's holistic review (essays, EC's, context), or institutional familiarity helping at the margin. The data can't distinguish which, but the pattern itself is real and worth understanding.
- ▸Senior-class enrollment is down 4% (809→773 from 2018 to 2026), tracking the peer-group median of -3%.
- ▸At its recent rate (-1.0%/yr), enrollment projects to ~2965 by 2029 — about 87 fewer students than today.
Most similar nearby schools
| School | Type | UC Reach | Enroll. |
|---|---|---|---|
| Upland High School | Public | 18.7% | -9% |
| Montclair High School | Public | 12.5% | -1% |
| Rancho Cucamonga High School | Public | 22.0% | +1% |
| Alta Loma High School | Public | 10.7% | +8% |
| Los Osos High School | Public | 27.4% | -18% |
| Chino High School | Public | 14.7% | +1% |
UC Reach = top-6 UC admits ÷ senior class. Sources: UCOP Admissions by Source School, CDE enrollment, IRS Form 990, NCES F-33. Reach — by Test Prep Gurus · Methodology
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